Back to Grok 4 Fast Reasoning

Grok 4 Fast Reasoning

Grok 4 optimized for fast reasoning.

grok-4-fast-reasoning
STABLEGet Started
Streaming
Vision
Tools
Reasoning
JSON Output
15% offall models via xai—6d 19h 58m remaining

Select Provider

xAI Pricing for Grok 4 Fast Reasoning

View detailed pricing and capabilities for this provider.

xAI
Context: 2M15% off
Input
$0.2$0.17
/M tokens
Cached
$0.05$0.0425
/M tokens
Output
$0.5$0.425
/M tokens
Get Started